Attachment for drill-presses.



' provements. in Attachments Presses, of which the following is a specifi- A A EN Fries.

ANDERS EMIL ANDERSON, OF LAKE FOREST, ILLINOIS, ASSIGNOR 0F ONE-HALF ANDERS G. JOHNSON, OF LAKE FOREST, ILLINOIS.

ATTACHMENT FOR DRILL-PRESSES.

To all whom t may concern:

Be it known that I, ANDERS 3Min ANDER- soN, formerly a subject of the King of Sweden, but having since declared my intention of becoming a citizen of the United States, a resident of the city of Lake Forest, county of Lake, and State of Illinois, have invented certain new and useful Imfor Drillcation. y

My invention relates to improvements in devices for supporting work on drill presses 'and the like, and the object of my improvement is to provide a device of this character, which is simple of construction and efficient in operation.

The invention consist-s in the combinations and arrangements of parts hereinafter described and claimed.

The invention will be best understood by reference to the accompanying drawings forming a part of this specification, and in which,

Figure 1 is a side elevation of my device without the work holding means, Fig. 2 is an end elevation of the same Fig. 3 is an enlarged 'section of the circular perforation holding member, Fig. l is a side elevation of my device illustrating the method of attaching said circular perforation holding member, Fig. 5 is a side elevation of my devioe showing the vise attachment, Fig. 6 is a sectional elevation of the same taken on line6-6 of Fig. 5, Fig. 7 illustrates a side elevation of a modified form of supporting arm in my device, Fig. 8 is a section of my device taken on the line indicated by the line 8---8 in Fig.' 7, and Fig. 9 is a side elevation of the washer used in connection with the modified form.

The preferred form of construction, as illustrated in the drawings comprises a base 10 having a circular clamping member 11 adjusted by means of a cap screw 12. In said circular clamping member 11 is removably secured a circular head portion 13 having a shoulder 14 to fit against the side of the clamping member 11. In the side of said circular head 13 isa recess 15 in which is removably secured an arm 16 and in said arm 16 is a square recess adapted to preventthe securing bolt 17 from turning therein. The bolt 17 is used to bind `the arm 16 to Specification of Letters Patent;

Application led May 10,1912.

Patented May 6, 1913.

serial No. 696.340.

the circular'head 13 and a Washer 18 is provided on the reverse side of the circular clamp 11. The arm 1G is provided with a' circular head 19 having its outer surface in a plane perpendicular to a line drawn through its central portion and the axial center of said arm 16. Said head member 19 is provided with a perforation through Which is secured a bolt 20 used Vto bind the work supporting member 21 thereto. The work supporting meknber 21 is provided with a circular hub to engage the outer surface of said head member 19 in a manner to allow the work supporting member 21 to be rotated on said bolt 20. The bolt 20 is provided with a square head and fitted in a square recess to render the head of the bolt 20 iush with the working surface of said supporting member 21.

'Ihe supportingmember 21 may be removed and a cylindrical member 22 secured on the bolt 20 to support work having circular perforations, such as pulleys and the like. The pulley for instance is supported on such member 22 and manually held to prevent it from rotating thereon. A recess 24. is formed in the cylindrical supporting member 22 so that the point of a drill or other tool after passing through the work held on said member will enter such recess to prevent defaeing the Supporting member.

Small and irregular work may be held in a vise 25, illustrated in Fig. 5, which is secured to the supporting member 21 by means of bolts 26. Graduations 27 are provided' 'on the hub portion of the supporting memythe head port-ion 31 is provided with a slitted annular shoulder 32 to engage the inside of the circular clamping member 11 and a washer 33 having tongues 34 adapted to engage the slits in the tongue 32, as illustrated in Fig. 8, is provided with Aan .opening through its central portion and a bolt 35 adjusted therethrough to bind the head portion 32 and'washer portion 33 tightly against the inside of the circular clamp 11. This form is more desirable in small patterns of my dev1ce.

In adjusting the device on the axis in the center of bolt 17 the clamping screw 12 may be loosened and the arm rotated in the clampingA member 11, or the bolt 17 may be loosened and the arm lswung on the head 13. This is especially desirable when 'making quick changes in the device and when it is not desired to set it at certain fixed positions. In the lower edge of the head 19 is fitted a screw adjustment 3G provided with a lock nut. 37 by which fine adjustment of the arm 13 may be made in order to secure the Work at certain angles. A reinforcing member'38 is Yremovably supported on the basel 10 and provided with a screw support 39 to engage the under side of the arm 15 in supporting heavy work to give greater rigidity to the Work supporting device.

Vhile I have illustrated and described the:

modifications as comewithin the scope of the y appended claims.

Having descrlbed my invention What I claun as-'new and desire to secure by Lett-ers Patent is 1. The combination with a base; a circular clamping member carried by said base; a head adjusta-bly mounted in said circular clamping member and provided with a shoulderv around one end and a recess in such end; an arm having one end fitted in.

said recess; a washer; and a bolt through said arm, head and washer clamping said 'circular clamping member between Said Washer and the shoulder on said head to adclamping member and said arm in said recess, substantially as described.

-2. The combination with a base; a circularclamping member carried by said base; a head adjustably mounted in said circular clamping member and provided With a shoulder around one end and a recess in such end; an arm having one end fitted in said recess; a Washer; a bolt through said arm, head and washer clamping said circular clamping member between said Washer and the shoulder 011 said head to adjustably secure said head in said circular clamping member'and said arm in said recess; a Work securing head carried by said arm; and an auxiliary support adjustably secured in said Work holding head, substantially as described.

3. The combination with a base, of a slitted circular clamping member carried by said base; a head rotativcly mounted in said slitted circular clamping member and provided with a. shoulder around one of its ends engaging the side` of such clamping member, said head beingalso provided with a perforation through its axial portion and a recess around one end of such perforation; means for clampingsaid slitted circular clamping member around said head; an arm having one end fitted in said recess and provided with a perforation; a Washer; a bolt through said arm, head and Washer clamping said slitted circular clamping member between said shoulder and said Washer on said head; and a work securing head on said arm, substantially as described.

In testimony Where-of I have signed my name to this specification in the presence of two subscribing Witnesses.

ANDERS EMIL ANDERSON.

Witnesses:

ARTHUR A. OLsoN, JOSHUA R. H. Po'r'rs. 

